S
WMidbrain
WCorpora quadrigeminaA
WEdinger–Westphal nucleus
WInferior colliculusB
WMickey Mouse sign
WMidbrain tegmentumC
WOculomotor nucleus
WPeriaqueductal grayD
WRed nucleus
WSubstantia nigraE
WSuperior cerebellar peduncle
WSuperior colliculusF
WTrochlear nucleus
WVentral tegmental area